23243431 has 4 divisors (see below), whose sum is σ = 23483152. Its totient is φ = 23003712.

The previous prime is 23243417. The next prime is 23243443. The reversal of 23243431 is 13434232.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23243431 - 2⁷ = 23243303 is a prime.

It is a super-2 number, since 2×23243431² = 1080514169303522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23243411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119715 + ... + 119908.

It is an arithmetic number, because the mean of its divisors is an integer number (5870788).

Almost surely, 2^23243431 is an apocalyptic number.

23243431 is a deficient number, since it is larger than the sum of its proper divisors (239721).

23243431 is an equidigital number, since it uses as much as digits as its factorization.

23243431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239720.

The product of its digits is 1728, while the sum is 22.

The square root of 23243431 is about 4821.1441588071. The cubic root of 23243431 is about 285.3864911308.

Adding to 23243431 its reverse (13434232), we get a palindrome (36677663).

The spelling of 23243431 in words is "twenty-three million, two hundred forty-three thousand, four hundred thirty-one".